diff --git a/BaseTools/Conf/tools_def.template b/BaseTools/Conf/tools_def.template
index 5db3f61191..498696e583 100755
--- a/BaseTools/Conf/tools_def.template
+++ b/BaseTools/Conf/tools_def.template
@@ -2458,6 +2458,7 @@ RELEASE_GCC5_AARCH64_DLINK_XIPFLAGS = -z common-page-size=0x20
 *_GCC5_RISCV64_DLINK2_FLAGS         = DEF(GCC5_RISCV64_DLINK2_FLAGS)
 *_GCC5_RISCV64_RC_FLAGS             = DEF(GCC_RISCV64_RC_FLAGS)
 *_GCC5_RISCV64_OBJCOPY_FLAGS        =
+*_GCC5_RISCV64_DTCPP_FLAGS          = DEF(GCC_DTCPP_FLAGS)
 
 ####################################################################################
 #